01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * // Copyright 2006-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: *
07: * The contents of this file are subject to the terms of either the GNU
08: * General Public License Version 2 only ("GPL") or the Common Development
09: * and Distribution License("CDDL") (collectively, the "License"). You
10: * may not use this file except in compliance with the License. You can obtain
11: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
12: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
13: * language governing permissions and limitations under the License.
14: *
15: * When distributing the software, include this License Header Notice in each
16: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
17: * Sun designates this particular file as subject to the "Classpath" exception
18: * as provided by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the License
20: * Header, with the fields enclosed by brackets [] replaced by your own
21: * identifying information: "Portions Copyrighted [year]
22: * [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * If you wish your version of this file to be governed by only the CDDL or
27: * only the GPL Version 2, indicate your decision by adding "[Contributor]
28: * elects to include this software in this distribution under the [CDDL or GPL
29: * Version 2] license." If you don't indicate a single choice of license, a
30: * recipient has the option to distribute your version of this file under
31: * either the CDDL, the GPL Version 2 or to extend the choice of license to
32: * its licensees as provided above. However, if you add GPL Version 2 code
33: * and therefore, elected the GPL Version 2 license, then the option applies
34: * only if the new code is made subject to such option by the copyright
35: * holder.
36: */
37:
38: package oracle.toplink.essentials.ejb.cmp3.persistence;
39:
40: import java.io.IOException;
41: import java.io.InputStream;
42: import java.net.URL;
43: import java.util.Collections;
44: import java.util.Iterator;
45:
46: /**
47: * This is an implementation of {@link Archive} when container returns a url
48: * that is not one of the familiar URL types like file or jar URLs. So, we can
49: * not recurssively walk thru' it's hierarchy. As a result {@link #getEntries()}
50: * returns an empty collection.
51: *
52: * @author Sanjeeb.Sahoo@Sun.COM
53: */
54: public class URLArchive implements Archive {
55: /*
56: * Implementation Note: This class does not have any dependency on TopLink
57: * or GlassFish implementation classes. Please retain this searation.
58: */
59:
60: /**
61: * The URL representation of this archive.
62: */
63: private URL url;
64:
65: public URLArchive(URL url) {
66: this .url = url;
67: }
68:
69: public Iterator<String> getEntries() {
70: return Collections.EMPTY_LIST.iterator();
71: }
72:
73: public InputStream getEntry(String entryPath) throws IOException {
74: URL subEntry = new URL(url, entryPath);
75: InputStream is = null;
76: try {
77: is = subEntry.openStream();
78: } catch (IOException ioe) {
79: // we return null when entry does not exist
80: }
81: return is;
82: }
83:
84: public URL getEntryAsURL(String entryPath) throws IOException {
85: URL subEntry = new URL(url, entryPath);
86: try {
87: InputStream is = subEntry.openStream();
88: is.close();
89: } catch (IOException ioe) {
90: return null; // return null when entry does not exist
91: }
92: return subEntry;
93: }
94:
95: public URL getRootURL() {
96: return url;
97: }
98: }
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